GRIB2 - TABLE 4.2-0-15

PARAMETERS FOR DISCIPLINE 0
CATEGORY 15

(Meteorological products, Radar category)

In Section 0, Octet 7 = 0
In Section 4, Octet 10 = 15

Revised 09/11/2025
Red text depicts changes made since 06/11/2025
Grey text indicates deprecated parameters



Number
(In Section 4, octet 11)
Parameter Units
Abbrev
0
Base Spectrum Width
m s-1
BSWID
1
Base Reflectivity
dB
BREF
2
Base Radial Velocity
m s-1 BRVEL
3
Vertically-Integrated Liquid Water kg m-2 VIL
4
Layer Maximum Base Reflectivity
dB
LMAXBR
5
Precipitation (see Note 1)
kg m-2 PREC
6
Radar Spectra (1)

RDSP1
7
Radar Spectra (2)
RDSP2
8
Radar Spectra (3)
RDSP3
9
Reflectivity of Cloud Droplets dB
RFCD
10
Reflectivity of Cloud Ice dB
RFCI
11
Reflectivity of Snow dB
RFSNOW
12
Reflectivity of Rain dB
RFRAIN
13
Reflectivity of Graupel dB
RFGRPL
14
Reflectivity of Hail dB
RFHAIL
15
Hybrid Scan Reflectivity dB HSR
16
Hybrid Scan Reflectivity Height m HSRHT
17
Precipitation Rate kg m-2 s-1 PRATE
18
Radar Data Quality Index (see Note 2) Proportion RQI
19
Radar Data Quality Flag See Table 4.106
RDQF
20-191
Reserved

192-254
Reserved for Local Use


192
Vertically-Integrated Liquid Water kg m-2 RADARVIL
255
Missing




Notes:

(1)  Statistical process 1 (Accumulation) does not change units. It is recommended to use another parameter with "rate" in its name and accumulation in PDT.

(2)  Spatially analyzed quality indicator, according to Opera II (Holleman I., Michelson D., Galli G., Germann U., and Peura M., 2006: Quality information for radars and radar data. OPERA II deliverable OPERA_2005_19), normalized to between 0 (poorest quality) to 1 (best quality).


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